Power of Attorney

A power of attorney (POA) is a legal document that authorizes one person to act on behalf of another in financial, legal, or medical matters. The person granting authority is the principal; the person receiving it is the attorney-in-fact or agent. A POA takes effect during the principal's lifetime and terminates at death; it does not govern the distribution of assets, which is the function of a will or trust.

How it works

The principal signs a written document identifying the agent, defining the scope of authority, and specifying when that authority begins and ends. Most states require notarization, witness signatures, or both. The document must comply with the laws of the state where it will be used.

The principal must have legal capacity at the time of signing. A POA cannot be created after a person has been declared mentally incapacitated; at that point, a court-supervised guardianship or conservatorship is typically required instead.

Why it matters

Without a valid POA, family members may have no legal authority to manage finances, pay bills, or make medical decisions if the principal becomes incapacitated. Courts may then need to appoint a guardian or conservator: a process that is time-consuming, public, and costly, often $3,000 to $10,000 or more in attorney fees alone.

A POA allows the principal to designate a trusted person in advance, avoiding court intervention and ensuring continuity when the principal is unavailable or incapacitated.

Key types

• Durable POA: Remains in effect if the principal becomes incapacitated. The most commonly used type for long-term financial planning.
• Non-durable POA: Expires automatically upon the principal's incapacity. Used for specific, time-limited transactions.
• Springing POA: Activates only when a specified event occurs, typically a physician's determination of incapacity.
• Limited (special) POA: Restricts the agent to a defined task or time period, such as signing documents at a real estate closing.
• Healthcare (medical) POA: Authorizes an agent to make medical decisions. A distinct document from a financial POA, often paired with a living will as part of an [advance healthcare directive](what is a medical power of attorney).

Important limitations

• Capacity is required at signing. A POA must be executed while the principal is of sound mind. Waiting until a crisis occurs may be too late.
• The agent is a fiduciary. The attorney-in-fact is legally obligated to act in the principal's best interest. Misuse can result in civil or criminal liability.
• State law governs execution. Requirements for signatures, notarization, and witnesses vary by state. A document that does not meet local requirements may be rejected by financial institutions or healthcare providers.
• A POA ends at death. Once the principal dies, the agent's authority terminates. Estate administration then passes to the executor named in the will or a court-appointed administrator.
• Revocation is permitted. A principal who retains legal capacity can revoke a POA at any time by signing a written revocation and notifying the agent and relevant third parties.

Related terms

• Medical power of attorney: Authorizes an agent to make healthcare decisions; typically included in an advance healthcare directive.
• Durable power of attorney: The standard form for financial planning, designed to survive the principal's incapacity.
• Estate plan: A POA is a core component of an estate plan, alongside a will or living trust and a healthcare directive.

FAQs about power of attorney

What can an agent actually do under a POA?

The scope depends on what the principal specifies. A broad financial POA can authorize paying bills, managing accounts, filing taxes, and selling real estate. A limited POA may cover only a single transaction. The agent cannot exceed the boundaries defined by the document.

Does a POA need to be notarized?

Requirements vary by state, but most require at minimum the principal's signature, and many also require notarization, witness signatures, or both. A POA valid in one state may still be rejected in the state where it is used if it does not meet that state's requirements.

Can more than one person be named as agent?

Yes. The document should specify whether co-agents must act jointly or can act independently. Principals may also name a successor agent to serve if the primary agent is unable or unwilling to act.